Results 11 to 20 of about 4,907,693 (364)
Reaching for the Unreachable: Reorganization of Reaching with Walking [PDF]
IEEE Transactions on Autonomous Mental Development, 2013 Previous research suggests that reaching and walking behaviors may be linked developmentally as reaching changes at the onset of walking. Here we report new evidence on an apparent loss of the distinction between the reachable and nonreachable distances as children start walking.
Beata J. Grzyb +2 more
openaire +5 more sources
Reaching the limit in autonomous racing: Optimal control versus reinforcement learning [PDF]
Science Robotics, 2023 A central question in robotics is how to design a control system for an agile mobile robot. This paper studies this question systematically, focusing on a challenging setting: autonomous drone racing. We show that a neural network controller trained with
Yunlong Song +4 more
semanticscholar +1 more source
Electrically driven reprogrammable phase-change metasurface reaching 80% efficiency [PDF]
Nature Communications, 2021 Phase-change materials (PCMs) offer a compelling platform for active metaoptics, owing to their large index contrast and fast yet stable phase transition attributes.
Sajjad Abdollahramezani +13 more
semanticscholar +1 more source
COVID-19 pandemic: A review of the global lockdown and its far-reaching effects
Science in progress, 2021 COVID-19, caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), was declared a pandemic by the World Health Organization (WHO) on the 11th of March 2020, leading to some form of lockdown across almost all countries of the world. The
Helen Onyeaka +4 more
semanticscholar +1 more source
Pavlovian threat learning shapes the kinematics of action
Frontiers in Psychology, 2022 Prompt response to environmental threats is critical to survival. Previous research has revealed mechanisms underlying threat-conditioned physiological responses, but little is known about how threats shape action.
Francesca Starita +4 more
doaj +1 more source
Reaching New Heights in Plastic Pollution—Preliminary Findings of Microplastics on Mount Everest
One Earth, 2020 Summary Mount Everest was once a pristine environment. However, due to increased tourism, waste is accumulating on the mountain, with a large proportion being made of plastic.
I. Napper +10 more
semanticscholar +1 more source
Frontiers in Human Neuroscience, 2020 Hemiparetic stroke in adulthood often results in the grouped movement pattern of the upper extremity flexion synergy thought to arise from an increased reliance on cortico-reticulospinal pathways due to a loss of lateral corticospinal projections.
Nayo M. Hill +4 more
doaj +1 more source
tmmurtola/reaching-arm-model: v2.0
, 2023 Model used for simulations with age-related changes in muscle passive stiffness in Murtola & Richards (2023) The impact of age-related increase in passive muscle stiffness on simulated reaching accuracy.
tmmurtola
core +1 more source
Hierarchical Control of Visually-Guided Movements in a 3D-Printed Robot Arm
Frontiers in Neurorobotics, 2021 The control architecture guiding simple movements such as reaching toward a visual target remains an open problem. The nervous system needs to integrate different sensory modalities and coordinate multiple degrees of freedom in the human arm to achieve ...
Adam Matić +2 more
doaj +1 more source
A New Reaching Law for Antidisturbance Sliding-Mode Control of PMSM Speed Regulation System
IEEE transactions on power electronics, 2020 In this article, in order to optimize the dynamic performance of the permanent magnet synchronous motor (PMSM) speed regulation system, a nonlinear speed-control algorithm for the PMSM control systems using sliding-mode control is developed.
Yaoqiang Wang +3 more
semanticscholar +1 more source